#include <syscall.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
int main(void){
	long ID1,ID2;
	ID1 = syscallSYS_getpid);//System call so' 20 , co' tac' dung. nhu ham` getpid() de? lay' process id , xem them cac' system call khac' trong bang? system call cua linux
	printf("syscall(SYS_getpid)=%ld\n",ID1);
	ID2 = getpid();
	printf("getpid()=%ld\n",ID2);
	return 0;
}
